From 20bdee4acc1125f8aee78fff61c0919d5414e003 Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Fri, 5 Feb 2016 22:33:50 +0100
Subject: [PATCH] convenience ctor condition in Variant to build string from
 char literal

Because this is especially annoying when constructing any type
based on lib::Variant, which is assumed to hold a string.
---
 src/lib/variant.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/lib/variant.hpp b/src/lib/variant.hpp
index d23ba8c50..66d990384 100644
--- a/src/lib/variant.hpp
+++ b/src/lib/variant.hpp
@@ -128,6 +128,12 @@ namespace lib {
         using Type = X;
       };
     
+    template<typename TYPES, size_t len>
+    struct CanBuildFrom<const char [len], Node<string, TYPES>> ///< esp. allow to build string from char literal
+      {
+        using Type = string;
+      };
+    
     template<typename X, typename T,typename TYPES>
     struct CanBuildFrom<X, Node<T, TYPES>>
       {